[
https://issues.apache.org/jira/browse/HIVE-17934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16244958#comment-16244958
]
Ashutosh Chauhan commented on HIVE-17934:
-----------------------------------------
I see changes which I am not sure we want. e.g., if 2 TS has COMPLETE basic
stats, stats for join (or group by) following it becomes PARTIAL after this
patch. Any reason for such a change?
> Merging Statistics are promoted to COMPLETE (most of the time)
> --------------------------------------------------------------
>
> Key: HIVE-17934
> URL: https://issues.apache.org/jira/browse/HIVE-17934
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Attachments: HIVE-17934.01.patch, HIVE-17934.02.patch,
> HIVE-17934.03.patch, HIVE-17934.04.patch, HIVE-17934.05.patch,
> HIVE-17934.06wip01.patch
>
>
> in case multiple partition statistics are merged the STATS state is computed
> based on the datasize and rowcount;
> the merge may hide away non-existent stats in case there are other partition
> or operators which do contribute to the datasize and the rowcount.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
